Maddie Grace began chemotherapy treatment shortly after her first diagnosis, which ended in October 2010 when her parents thought she had the all-clear.

However, in February 2011 the family learned Maddie's leukaemia had returned and she immediately had a bone marrow transplant.

Between 2011 and 2014, Maddie relapsed four times. She relapsed for the sixth time in September 2015.

After a post by the anonymous friend was shared on Imgur about Maddie's journey, strangers began donating to Maddie's GoFundMe page to finance her treatment and the everyday expenses her parents incurred.

Donations are still being made to "help reduce the trivial stress of finances in this very difficult time".